Measurement Technology of Equivalent Electromagnetic Parameters of Electromagnetic Composites at Oblique Incidence

ZHANG Yunpeng; ZHU Xiangbao; YE Jinping; WANG Xiaolu

doi:10.19554/j.cnki.1001-3563.2025.17.009

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (17) : 80-88. DOI: 10.19554/j.cnki.1001-3563.2025.17.009

Special Topic on Lightweight Broadband Electromagnetic Composite Materials

Measurement Technology of Equivalent Electromagnetic Parameters of Electromagnetic Composites at Oblique Incidence

ZHANG Yunpeng^*, ZHU Xiangbao, YE Jinping, WANG Xiaolu

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Abstract

The work aims to propose a method for measuring the equivalent electromagnetic parameters of electromagnetic composites under oblique incidence, so as to analyze and optimize the electromagnetic characteristics of electromagnetic composites under oblique incidence of plane electromagnetic waves. An incident angle parameter was introduced to develop an inversion algorithm for obtaining equivalent electromagnetic parameters at oblique incidence. Scattering parameters at oblique incidence were tested accurately using the transmission-reflection calibration technique, where a metal plate and air were used. An 8-12 GHz test system was constructed to measure equivalent electromagnetic parameters of typical materials, such as a honeycomb. The reflectivity was calculated based on the test data and compared with arch-method test results; The deviation between the two was less than 0.5 dB, indicating high accuracy of this method. This work provides an efficient testing solution for evaluating electromagnetic properties of electromagnetic composites; it also greatly simplifies the simulation modeling and design of complex structures.

Key words

electromagnetic composites / equivalent electromagnetic parameters / oblique incidence

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ZHANG Yunpeng, ZHU Xiangbao, YE Jinping, WANG Xiaolu. Measurement Technology of Equivalent Electromagnetic Parameters of Electromagnetic Composites at Oblique Incidence[J]. Packaging Engineering. 2025, 46(17): 80-88 https://doi.org/10.19554/j.cnki.1001-3563.2025.17.009

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